Britain's Prince William his wife Catherine, Duchess of Cambridge, and Prince Harry arrive at Westminster Abbey in London, on June 4, 2013 for a service to celebrate the 60th anniversary of the Coronation Service.

Britain's Prince William and Kate, Duchess of Cambridge, arrive for a service to celebrate the 60th anniversary of the coronation of Britain's Queen Elizabeth II at Westminster Abbey in London on Tuesday, June 4, 2013.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge arrive for a service of celebration to mark the 60th anniversary of the Coronation Queen Elizabeth II at Westminster Abbey on June 4, 2013 in London, England.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge arrive for a service of celebration to mark the 60th anniversary of the Coronation Queen Elizabeth II at Westminster Abbey on June 4, 2013 in London, England.

Britain's Catherine, Duchess of Cambridge attends a garden party at Buckingham Palace in London May 22, 2013.

Camilla, The Duchess of Cornwall (L) and Catherine, Duchess of Cambridge attend a garden party at Buckingham Palace in London May 22, 2013.

LONDON, ENGLAND - MAY 22: Catherine, Duchess of Cambridge (detail) attends a Garden Party in the grounds of Buckingham Palace hosted by Queen Elizabeth II on May 22, 2013. (Photo by John Stillwell - WPA Pool/Getty Images)

Prince Charles, the Prince of Wales (L), Camilla, the Duchess of Cornwall (C) and Catherine, the Duchess of Cambridge attend a garden party in the grounds of Buckingham Palace on May 22, 2013.

Catherine, Duchess of Cambridge talks to guests as she attends a garden party in the grounds of Buckingham Palace on May 22, 2013.

Catherine, Duchess of Cambridge meets children and staff during a visit to Naomi House Children's Hospice on April 29, 2013 near Winchester, Hampshire, England.

Catherine, Duchess of Cambridge Visits Naomi House on April 29, 2013 in Hampshire, England.

Catherine, Duchess of Cambridge arrives at the Inauguration Of Warner Bros. Studios Leavesden on April 26, 2013 in London, England.

Catherine, Duchess of Cambridge arrives at the Inauguration Of Warner Bros. Studios Leavesden on April 26, 2013 in London, England.

Catherine, Duchess of Cambridge attends an evening reception to celebrate the work of The Art Room charity at The National Portrait Gallery on April 24, 2013 in London, England.

Britain's Catherine, Duchess of Cambridge attends an evening reception to celebrate the work of The Art Room charity at The National Portrait Gallery in London on April 24, 2013.

Catherine, Duchess of Cambridge arrives to visit The Willows Primary School on April 23, 2013 in Manchester, England.

Catherine, Duchess of Cambridge arrives to visit The Willows Primary School on April 23, 2013 in Manchester, England.

Catherine, Duchess of Cambridge attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013 in Windsor, England.

Catherine, Duchess of Cambridge attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.

Catherine, Countess of Strathearn during a visit to Dumfries House on April 5, 2013 in Ayrshire, Scotland.

Catherine, Duchess of Cambridge visits Dumfries House in Ayrshire, Scotland, on April 5, 2013.

Catherine, Countess of Strathearn visits the Donald Dewar Leisure Centre to launch a new project for their foundation on April 4, 2013 in Glasgow, Scotland.

Catherine, Countess of Strathearn visits the Donald Dewar Leisure Centre to launch a new project for their foundation on April 4, 2013 in Glasgow, Scotland.

Catherine, Duchess of Cambridge visits the Baker Street tube station with Queen Elizabeth II and Prince Philip, Duke of Edinburgh in London on March 20, 2013 to mark the 150th anniversary of the London underground.

Catherine, Duchess of Cambridge makes an official visit to the Baker Street tube station on March 20, 2013 in London, England.

Catherine, Duchess of Cambridge leaves following a visit to the offices of Child Bereavement UK in Saunderton, Buckinghamshire on March 19, 2013.

Catherine, Duchess of Cambridge receive a teddy bear during a visit to the offices of Child Bereavement UK in Saunderton, Buckinghamshire on March 19, 2013.

Catherine, Duchess of Cambridge visits the offices of Child Bereavement UK in Saunderton, Buckinghamshire on March 19, 2013.

Catherine, Duchess of Cambridge and her husband, Prince William, attend the St. Patrick's Day Parade at Mons Barracks in Aldershot, England on March 17, 2013.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend a St. Patrick's Day parade by the 1st Battalion Irish Guards as they visit Aldershot Barracks on St Patrick's Day on March 17, 2013 in Aldershot, England.

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge watch the races on Gold Cup Day at Cheltenham Racecourse on March 15, 2013 in Cheltenham, England.

Catherine, Duchess of Cambridge attends day four of the Cheltenham Festival at Cheltenham Racecourse on March 15, 2013 in Cheltenham, England.

Catherine, Duchess of Cambridge visits Humberside Fire and Rescue Peaks Lane Fire Station on March 5, 2013 in Grimsby, England.

Catherine, The Duchess of Cambridge arrives to visit the National Fishing Heritage Centre on March 5, 2013 in Grimsby, England.

Catherine, Duchess of Cambridge visits Hope House Residential Centre on February 19, 2013 in London, England.

This picture taken on February 19, 2013 shows the 'baby bump' of Britain's Catherine, Duchess of Cambridge as she arrives at the Hope House charity in south London.

Catherine, Duchess of Cambridge is seen after viewing artist Paul Emsley's new portrait of herself during a private viewing at the National Portrait Gallery on January 11, 2013 in London, England.

Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge meet artist Paul Emsley after viewing his new portrait of the Duchess during a private viewing at the National Portrait Gallery on January 11, 2013 in London, England.

The Duchess of Cambridge, Catherine Middleton and Prince William, Duke of Cambridge leave the King Edward VII Hospital where she has been treated for hyperemesis gravidarum, extreme morning sickness, on December 6, 2012 in London, England.

Prince William, Duke of Cambridge arrives at the King Edward VII Hospital in central London on December 6, 2012, where Catherine, Duchess of Cambridge was admitted for severe morning sickness.

FAMILY TREE: Queen Elizabeth II, Queen of the United Kingdom and the Commonwealth and Prince William's grandmother.
MEANING: Elizabeth is of Hebrew origin and means God's promise or God is my oath.
WHY WE LIKE IT: Why wouldn't you want to be named after one of the most powerful women in the United Kingdom? Even though sources report that the couple has decided to use Elizabeth as one of two middle names, Elizabeth not only honours the baby's great grandmother, but Kate Middleton's middle name is Elizabeth as well.

FAMILY TREE: King George VI was King of the United Kingdom from 1936 to 1952.
MEANING: Originally of Greek origin, the meaning of George is "farmer". Also there is the story of Saint George, a knight who became the patron saint of England and achieved legendary status after his struggle with a fire-breathing dragon.
WHY WE LIKE IT: Besides being a dragon slayer, the name George goes back to the Royal family's history books since 1660. George VI was also the last male figure in power — this title currently belongs to Queen Elizabeth II.

FAMILY TREE: Princess Diana, The Princess of Wales and Prince William's mother.
MEANING: Diana is derived from either an Indo-European root meaning 'divine' or from the Latin word 'diviana.'
WHY WE LIKE IT: After Princess Diana's tragic car crash in 1997, Diana would be a wonderful tribute to remember Lady Di. Again, sources say the couple plan on using Diana as a middle name, but we would love to see Diana used as the first name.

FAMILY TREE: Prince William, Duke of Cambridge and father.
MEANING: William is of Old German origin and means protection.
WHY WE LIKE IT: Maybe a reason to follow in his father's footsteps, William Jr. may be a suitable name if the couple had a baby boy. Prince William has always been known for his good grades, his love for sports and being a philanthropist.

FAMILY TREE: Princess Margaret, Countess of Snowdon, was Queen Elizabeth's sister.
MEANING: Margaret is of Greek origin and means pearl.
WHY WE LIKE IT: Keeping it in the family, we like that fact that Princess Margaret was the Queen's youngest and only sibling. Margaret lived a life of controversy when it came to her love life and divorce, but she was remembered for her affection and love for her family, according to The Telegraph. Plus, so many good nickname possibilities!

FAMILY TREE: Princess Diana's mother's name was Frances Shand Kydd.
MEANING: Frances, which comes from old French, means to be free.
WHY WE LIKE IT: Another way to keep a grandmother's name in the family, authors have described her as "certainly complicated" but also "funny, warm, intelligent and energetic," according to The Daily Mail. We also like this name because it could be used both for a baby girl or boy.

FAMILY TREE: Queen Victoria spent 63 years on the throne.
MEANING: Victoris of Latin origin and means victory.
WHY WE LIKE IT: Queen Victoria continues to be the family's longest reigning monarch and the longest reigning female in power. As a child, she was known as a "patient rebel" — always aiming to be "good" but also very strong-minded, according to Professor Lynne Vallone.

FAMILY TREE: Charles, Prince of Wales, father of Prince William.
MEANING: The name is Old German and means free man.
WHY WE LIKE IT: Staying true to a father-son bond, royal sources have said that Prince William has been very supportive of his father and that they share a closer relationship, according to the Telegraph. Who knows, maybe this is a trait that will continue with Prince William's son.

FAMILY TREE: Actually, this name isn't in the family — but it could be.
MEANING: Jason means the healer.
WHY WE LIKE IT: It may not be part of the Royal family's family tree just yet, but "Fledgling Jason Steed" is one of Prince William's favourite books, according to The Daily Mail. The story follows an 11-year-old boy named Jason Steed who is destined to save himself and his country from a nuclear threat.

FAMILY TREE: Okay, we're throwing this one out there but hear us out.
MEANING: Smythe is Old English for 'blacksmith.'
WHY WE LIKE IT: Kate Middleton has been seen donning a Canadian-made Smythe blazer several times, including during the 2012 London Olympic Games. And who doesn't like the sound of Smythe for a baby girl? At least it doesn't rhyme easily.